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The purpose of this paper is to detect the existence of price bubbles and examine the possible contributing factors that associate with price bubble occurrences in China agricultural commodity markets.

Using recently developed rolling window right-side augmented Dickey–Fuller test, we first detect the dates of price bubbles in China's two important agricultural commodity markets, namely corn and soybeans. Then, we use a penalized maximum likelihood estimation of a multinomial logistic model to estimate the contributing factors of price bubbles in both markets, respectively.

Results from the bubble detection indicate that price bubbles account for 5.48% (3.91%) of the studied periods for corn (soybeans). More importantly, we find that market liquidity and speculation have opposite effects on the occurrences of bubbles in the corn and soybeans market. World stocks-to-use and exchange rates affect the occurrences of bubbles in a different way for each commodity, as well. Price bubbles are more likely associated with strong economic activity, high interest rates and low inflation levels.

This is the first study considering commodity-specific features into the formation of price bubbles. Through accurately identifying the bubble dates and fixing the estimation bias of rare events models, this study enables us to obtain robust results for each commodity. The results imply that China's corn and soybeans market respond differently to the speculative activity and external shocks from international markets. Therefore, future policy regulations on commodity markets should focus on more commodity-specific factors when aiming at avoiding bubble occurrences.

The purpose of this paper is to evaluate the effect of micro-nano mixed super-hydrophobic structure on corrosion resistance and mechanism of magnesium alloys.

A super-hydrophobic surface was fabricated on AZ91 and WE43 magnesium alloys by laser etching and micro-arc oxidation (MAO) with SiO₂ nanoparticles coating and low surface energy material modification. The corrosion resistance properties of the prepared super-hydrophobic surfaces were studied based on polarization curves and immersion tests.

Compared with bare substrates, the corrosion resistance of super-hydrophobic surfaces was improved significantly. The corrosion resistance of super-hydrophobic surface is related to micro-nano composite structure, static contact angle and pretreatment method. The more uniform the microstructure and the larger the static contact angle, the better the corrosion resistance of the super-hydrophobic surface. The corrosion resistance of super-hydrophobic by MAO is better than that of laser machining. Corrosion of super-hydrophobic surface can be divided into air valley action, physical shielding, pretreatment layer action and substrate corrosion.

The super-hydrophobic coatings can reduce the contact of matrix with water so that a super-hydrophobic coating would be an effective way for magnesium alloy anti-corrosion. Therefore, the corrosion resistance properties and mechanism of the prepared super-hydrophobic magnesium alloys were investigated in detail.

The roles that one single leadership style plays on motivating employees have been studied. However, in reality, an individual may exhibit more than one type of leadership style. This study aims to reveal how zhongyong leadership can lead to employees’ thriving at work in China, with a glance at ethical leadership as a moderator. The intrinsic motivation of employees is also considered as a mediator to show the specific path that bridges employees’ perceived leadership styles and their thriving at work.

Using three-period data from a sample of 346 employees working in Chinese companies, this study performs regression and bootstrap analyzes in PROCESS macro to test the hypotheses. By adopting the Johnson-Neyman technique, this study further identifies the specific moderating range within which ethical leadership makes a difference.

The positive correlation between zhongyong leadership and employees’ thriving at work only withstand scrutiny when the level of ethical leadership is sufficiently high and employees’ intrinsic motivation plays a mediating role. Specifically, when the ethical leadership level is higher than 6.022 (on a seven-point scale), zhongyong leadership can significantly increase the intrinsic motivation of employees and their thriving at work will be stronger as a result. On the contrary, when ethical leadership is lower than 1.089 (on a seven-point scale), this mediated relationship will head exactly in the opposite direction.

This study focuses on investigating the effects of multiple positive leadership behaviors on promoting employees’ thriving at work. The resultant findings provide compelling evidence for the integration of different leadership styles in practice and consolidate the theoretical underpinnings of related research on thriving at work.

The purpose of this paper is to employ a fractional approach to predict the permeability of nonwoven fabrics by simulating diffusion process.

The method described here follows a similar approach to anomalous diffusion process. The relationship between viscous hydraulic permeability and electrical conductivity of porous material is applied in the derivation of fractional power law of permeability.

The presented power law predicted by fractional method is validated by the results obtained from simulation of fluid flow around a 3D nonwoven porous material by using the lattice-Boltzmann approach. A relation between the fluid permeability and the fluid content (filling fraction), namely, following the power law of the form, was derived via a scaling argument. The exponent n is predominantly a function of pore-size distribution dimension and random walk dimension of the fluid.

The fractional scheme by simulating diffusion process presented in this paper is a new method to predict wicking fluid flow through nonwoven fabrics. The forecast approach can be applied to the prediction of the permeability of other porous materials.

The market segment of families with young children is significant for the cruise industry in China. This study aims to examine the cruise experience of them and facilitate the provision of family cruise vacation products and services.

This study collects online comments on the cruise experience of Chinese families with young children and analyzes the data in terms of text, sentiment and content.

The results of the text analysis indicate issues with several dimensions of the cruise experience. But the results of a sentiment analysis reveal that only 56.76% of the Chinese families with young children expressed positive feelings about cruise tourism. Almost one third (30.43%) expressed negative feelings, and the rest were neutral. In addition, by conducting a content analysis of the negative sentiment comments, this study identifies areas where cruise products and services need to be improved.

Cruise lines are advised to improve the provision of family cruise vacation products and services, such as enhancing physical experience elements, paying attention to human interaction and situational factors and caring for travelers’ personal needs.

This paper explores the cruise experience of Chinese families with young children, which is currently underdeveloped. A methodology approach including text analysis, sentiment analysis and content analysis is systematically applied to offer a holistic and deep understanding of travel experience. A framework for the cruise experience is proposed, which has theoretical and practical significance.

携儿童出游的中国家庭邮轮体验研究

摘要

有小孩的家庭细分市场对中国的邮轮行业来说意义重大。本研究旨在通过分析他们的邮轮体验, 提升家庭邮轮度假产品和服务的开发与运营。

本研究通过收集携儿童出游的中国家庭邮轮体验的相关在线评论, 对其从文本分析、情感分析和内容分析等方面对数据进行了分析。

文本分析的结果表明邮轮体验的若干维度上存在问题。但情感分析的结果显示, 只有56.76%的有小孩的中国家庭对邮轮体验表达出了积极情绪。近三分之一 (30.43%) 表达了负面情绪, 其余的则持中立态度。此外, 通过对负面情绪评论进行内容分析, 本研究提出了邮轮产品和服务需要提升的方向。

建议邮轮公司根据本研究的结果改进家庭邮轮度假产品和服务, 如增强身体体验元素, 关注人际互动和情境因素, 关心旅客的个性化需求等。

本文对目前尚没有进行充分探讨的携儿童出行的中国家庭的邮轮体验进行了分析, 为了更全面深入地理解邮轮旅行体验, 本研究系统地应用了包括文本分析、情感分析和内容分析等方法, 提出了邮轮体验的研究框架, 具有一定的理论和实践意义。

Experiencias vacacionales en crucero para familias chinas con niños pequeños

Resumen

El segmento de mercado de familias con niños pequeños es significativo para la industria de cruceros en China. Este estudio tiene como objetivo examinar la experiencia de crucero de este segmento, así como facilitar la oferta de productos y servicios de vacaciones familiares en crucero.

Este estudio recopila comentarios en línea sobre las experiencias de crucero en las familias chinas con niños pequeños, analizando los datos en términos de texto, sentimiento y contenido.

Los resultados del análisis del texto indican problemas con varias dimensiones de la experiencia del crucero. Pero los resultados del análisis de sentimientos, revela que solo el 56,76% de las familias chinas con niños pequeños expresaron sentimientos positivos sobre el turismo de cruceros. Casi un tercio (30,43%) expresó sentimientos negativos, y el resto fue neutral. Además, al realizar un análisis de contenido de los comentarios de sentimiento negativo, este estudio identifica áreas donde los productos y servicios de cruceros deben mejorarse.

Se recomienda a las líneas de cruceros que mejoren la oferta de productos y servicios vacacionales familiares, así como mejorar los elementos de la experiencia física, prestar atención a la interacción humana y los factores situacionales, y atender las necesidades personales de los viajeros.

Este trabajo explora la experiencia de crucero de las familias chinas con niños pequeños, que actualmente está poco desarrollada. Se aplica sistemáticamente un enfoque metodológico que incluye análisis de texto, análisis de sentimiento y análisis de contenido para ofrecer una comprensión holística y profunda de la experiencia de viaje. Se propone un marco para la experiencia del crucero, que tiene significado teórico y práctico.

The innovation process demands an interaction between environment agents, knowledge generators and policies of incentive for innovation and not only development by companies. Universities have gradually become the core of the knowledge production system and, therefore, their role regarding innovation has become more important and diversified. This study is aimed at identifying the mechanisms of university–industry (U–I) collaboration, as well as the operationalization steps of the U–I collaboration process.

This study is aimed at identifying, based on a systematic literature review, the mechanisms of university–industry (U–I) collaboration, as well as the operationalization steps of the U–I collaboration process.

The analysis of the 72 selected articles enabled identifying 15 mechanisms of U–I collaboration, proposing a new classification for such mechanisms and developing a framework presenting the operationalization steps of the interaction process.

In this paper, the authors screened nearly 1,500 papers and analyzed in detail 86 papers addressing U–I collaboration, mechanisms of U–I collaboration and operationalization steps of the U–I collaboration process. This paper provides a new classification for such mechanisms and developing a framework presenting the operationalization steps of the interaction process. This research contributes to both theory and practice by highlighting managerial aspects and stimulating academic research on such timely topic.

This study aims to explore the mediating role played by the contradictory behaviour of knowledge sharing and knowledge hiding in the relationship between paradoxical leadership and employee creativity.

A survey was conducted with 276 employees working in information technology firms in India. “To assess the relationship between the constructs, single and parallel mediation analysis of structural equation modelling (SEM) and confirmatory factor analysis (CFA) have been performed”.

This study found that paradoxical leadership is significantly associated with employee creativity. Besides, it has also been found that knowledge sharing has emerged as a mediator that explains the relationship between paradoxical leadership and creativity, while knowledge hiding has not been a mediator to explain the relationship between paradoxical leadership and creativity among employees. According to the study, it was found that discouraging knowledge-hiding behaviour can increase employee knowledge sharing, which in turn fosters employee creativity.

Research has examined the relationship between paradoxical leadership and employee creativity in this paradigm, as well as the roles of knowledge sharing and knowledge hiding as mediators.

The results of this study will help top management to create strategies for enhancing the relationship between a leader and their subordinates by using effective knowledge management strategies that foster employee creativity. Employee creativity would be facilitated effectively by the paradoxical leader who regulates knowledge-hiding behaviour among employees and promotes knowledge-sharing behaviour.

This study addresses the gap in prior research by investigating the role of paradoxical leadership in managing the contradictory behaviours of knowledge sharing and hiding and their impact on employee creativity. As the motivation for knowledge sharing and hiding are inherently distinct, leaders with paradoxical qualities foster a culture of openness and trust to encourage knowledge-sharing while discouraging knowledge-hiding behaviour. By controlling knowledge-hiding behavior empowers employees to make meaningful contributions to the organization’s success through effective collaboration and teamwork, allowing for a more innovative and creative workplace. Because preventing knowledge-hiding behaviour is a means to promote knowledge sharing and ultimately foster creativity in an organisation. Overall, this paper offers unique insights into the intricate dynamics of knowledge management and provides valuable recommendations for leaders managing employees exhibiting contradictory behaviours in the workplace.

This study aims to investigate the relationship between government subsidies, R&D expenditures and overcapacity, and to explore the heterogeneity effects in different time periods and different types of companies. It can provide theoretical and practical guidance for the development of the photovoltaic industry.

This paper constructs a mediation model to explore the impact of government subsidies on overcapacity and on R&D expenditures, and to propose an indirect way to disentangle the impact of government subsidies on the creation of overcapacity from the positive aspect of increased R&D expenditures. A total of 94 listed enterprises in the Chinese photovoltaic industry were selected as the sample over the period 2012–2019.

There was significant overcapacity in the photovoltaic industry. Government subsidies had a positive effect in promoting overcapacity and R&D expenditures. The influence of government subsidies on excess capacity increased and on R&D expenditures decreased over time. Compared with large enterprises, government subsidies the small enterprises received had a greater positive impact on the overcapacity and a smaller positive impact on R&D expenditure. R&D expenditures restrained the influence of government subsidies on overcapacity, but the suppression effect was limited and decreased over time. The indirect effect in small enterprises was greater than that of large enterprises.

This paper studied government subsidies, R&D expenditure and overcapacity in the same framework and used bias-corrected bootstrapping to explore the path of “government subsidies–R&D expenditures–overcapacity”. The heterogeneous effects in different periods and different types of firms are discussed.